Human chorionic gonadotropin(hcg)
[化] 人绒毛膜促性腺素
🧩 词语组成解析
[医] 绒[毛]膜的
🗣️ 情景例句
All I do is study and take exams.
我要接受所有的学习和考试。
I ask him to stay at school.
我要求他待在学校。
Our knowledge of the oceans a hundred years ago was confined to the two-dimensional shape of the sea surface and the hazards of navigation presented by the irregularities in depth of the shallow water close to the land.
100年前，我们只知道海洋是二维平面形的，以及靠近陆地浅水区的深浅不一能给航行带来危险。